$ uname -a Linux xenial 4.4.0-210-generic #242-Ubuntu SMP Fri Apr 16 09:57:56 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux $ ./leak.sh $ echo $? 0 $
$ uname -a
Linux xenial 4.4.0-210-generic #242-Ubuntu SMP Fri Apr 16 09:57:56 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
$ ./leak.sh
$ echo $?
0
$